Abstract
Temperature influences spawning, spawning behavior, development of secondary sexual characters, hatching time, growth, and eggs and milt production of the red shiner, Notropis lutrensis (Baird and Girard), in the laboratory. Fish were collected from the Little Brazos River and kept at room temperature (20-26 C) , 25, 27, 29, 31, 33, and 35 C in the laboratory for 2 months, to study the spawning range, spawning behavior, secondary sexual characters, and eggs and milt production. Room temperature (20-26 C) , 25, 27, 29, 31, 31.5, 32.5, and 33 C were used to determine the hatching time and survival rates, and room temperature (20-26 C ) , 25, 27, 29, and 31 C for 153 days following hatching were used to study growth.Studies reported here indicate that at the range between room temperature (20-26 C ) , and 31 C eggs and milt were produced, the males had breeding color, eggs hatched, developed and grew into adults. Time of egg hatching was maximum at low temperatures (20-26 C) , and minimum at a high of 29 C . Intensity of breeding color and survival rates of eggs and young were inversely related to temperature. Pre-adult growth was greatest at 29 C and progressively less at increasing and decreasing temperatures. After maturity greatest growth occurred at room temperature. There was a strong positive correlation between fish size and egg number and a negative correlation between temperature and egg number per gram of fish.
Islam, Md. Anwarul (1972). The effect of temperature on the reproduction of the red shiner, Notropis lutrensis (Baird and Girard). Texas A&M University. Texas A&M University. Libraries. Available electronically from
https : / /hdl .handle .net /1969 .1 /DISSERTATIONS -184664.